I have a local friend that has a complete Nitrous Express Kit available. Just taken off a local "Beat the Heat" car here in South Florida! Will get some pics for you.
This is his local ad:
Decided to pull it out of the car in favor of a supercharger or turbo setup. Kit was only used once for two passes. I have the following parts and the prices new when purchased less than 6 months ago:
Nitrous Express (NX) nozzle system kit with NX purge kit, NHRA blow off fiiting included on bottle $600 obo
NX bottle heater kit with NOS bottle pressure gauge $250 obo
Extra NX Bottle with valve and NHRA blow off fitting included on bottle $150 obo
I got plenty of plate systems. HAHA. whatever system you do end up getting, if you end up needing any help or have any questions about the systems let me know.